Are Electronic Cigarettes the New Trend? Office for Science and Society McGill University Talking to Your Teen Who Vapes University of Rochester Medicine Some E Cigarette Flavors May Be More Harmful Than Others The Atlantic All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs.